Deygan (23 Dey), Dey 23. This observance is one of the four Deygan festivals in the Zoroastrian calendar, marked when the day Dey coincides with the month Dey in the Shahanshahi calendar. On this day, Zoroastrians commemorate the divinity Dey, associated with justice and creation, through various rituals. The Deygan festivals are among the oldest Iranian celebrations, rooted in pre-Islamic traditions and still hold significance among Zoroastrians. During the fourth Deygan, families and members of the Zoroastrian community gather to recite Avesta prayers and perform special ceremonies. In some regions, ritual tables are set with traditional foods, which are shared among participants. The festival emphasizes values such as truthfulness, cooperation, and social solidarity. Deygan (23 Dey) remains an important part of Zoroastrian religious and cultural identity in the Shahanshahi calendar. It continues to be observed in parts of Iran and within Zoroastrian communities abroad. These ceremonies, beyond their religious aspects, play a vital role in maintaining social bonds and passing ancient traditions to new generations.
